Typo fixes

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@332156 c90b9560-bf6c-de11-be94-00142212c4b1
Reworded array_rand so that reader is not addressed as "you", and incorporated edit suggested by anonymous 35207

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@332157 c90b9560-bf6c-de11-be94-00142212c4b1